Because she has too much sex appeal for one, she's a bit young for another, and finaly she is all around not that great an actress...I mean, she's done very few things aside from TV drams, like House and OC...When it comes to acting like that, well, those shows are just barley above soap operas...not that the stories are bad, but the acting in nearly all those shows needs work...and in all honesty, my favorite TV show is a drama called Supernatural...and it's not entirley different...And don't bring up Tron...Her acting in that was mediocre at best...the Tron movie was good for its effects, not acting...